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Phase Behavior of Binary and Ternary Mixtures of Poly(ethylene-co-octene)–hydrocarbons by Sang-Ho Lee is a Materials Science article available to read on EtoBox.

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## Abstract Poly(ethylene‐__co__‐octene) (PEO) is a new thermoplastic elastomer that has the wide variation in mechanical, thermal, optical, and elastomeric properties. The variety of PEO properties results from incorporation octene comonomer in polyethylene backbone. Because of the wide difference in the copolymer properties, it is important to know the phase boundary to optimize the copolymerization and separation processes of PEO. The cloud‐point and bubble‐point curves for poly(ethylene‐__co__‐15.3 mol % octene) (PEO~15~), which has 15.3 mol % octene repeat unit in the backbone structure, were determined in __n__‐pentane, __n__‐hexane, __n__‐heptane, and __n__‐octane. The miscibility of PEO~15~ in normal alkane enlarges with the size of the normal alkane because of the increasing dispersion interactions related to polarizability. The phase behavior for the ternary systems of PEO~15~–ethylene–octene was also investigated, where ethylene and 1‐octene are monomer and comonomer of PEO. As the concentration of ethylene in the ternary mixture increases, the miscibility of PEO~15~ dramatically decreases. Adding 64 wt % ethylene into the ternary mixture increases the pressure, dissolvi

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Author

Sang-Ho Lee

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0021-8995)

Published

2004

Language

EN

Field

Materials Science (Physical Sciences)